The remainder , when (22225555 + 55552222) is divided by 7, is
A. 4
B. 5
D. 2
E. None of these
Answer: Option C
Solution (By Examveda Team)
an + bn is always divisible by (a + b) when n is odd.So,
(22225555 + 55552222) is always divisible by (2222 + 5555) = 7777
And 7777 is multiple of 7,
so (22225555 + 55552222) is divisible by 7
This Question Belongs to Arithmetic Ability >> Number System
please read the question carefully before attempt to answer .
BUT HERE POWER IS NOT SAME SO HOW WE USE THIS FORMULA IN THIS QUESTION ?